@article{fdi:010021652,
  title = {{V}ertical movements and material transport during hotspot activity : seismic reflection profiling offshore {L}a {R}{\'e}union},
  author = {{V}oogd, {B}. de and {P}ou {P}alom{\'e}, {S}. and {H}irn, {A}. and {C}harvis, {P}hilippe and {G}allard, {J}. and {R}ousset, {D}. and {D}anobeitia, {J}. and {P}erroud, {H}.},
  editor = {},
  language = {{ENG}},
  abstract = {{T}he structure of the submerged part of {L}a {R}{\'e}union hotspot island is determined by a grid of multichannel seismic reflection profiles. {T}he submarine part of the edifice appears as a poorly stratified wedge of material lying above a significant thickness of preexisting sediments and the oceanic basement. {T}he dense data coverage has allowed us to derive contour maps of the top of the basement and of the base of the volcaniclastic edifice, further constrained by coincident wide-angle profiles. {T}he resulting isobath maps reveal new, unsuspected features that could not be deduced from observation along a single seismic line since the geometry of these horizons varies significantly from one radial profile to the next. {B}oth maps show a large degree of heterogeneity in the topography, with no axial nor cylindrical symmetry, indicating that plate flexure is not dominant. {A} slight depression toward the island is observed only in the southern area, ahead of the hotspot trace. {T}he lack of angular unconformity in the volcano-sedimentary pile that covers the oceanic basement firmly establishes the lack of significant vertical movement and flexure. {T}he base of the edifice is roughly domed, centered on the island, with several topographic highs or lows superimposed. {T}he submarine apron appears as a composite constructional body, spreading by slumping of its flanks. {S}uperficial lenses of laterally transported material are observed on the seismic data south of the island, not only to the east of the active {P}iton de la {F}ournaise volcano. {O}ceanic sediments trapped beneath the apron seem undeformed. ({R}{\'e}sum{\'e} d'auteur)},
  keywords = {{VOLCANISME} ; {POINT} {CHAUD} ; {SISMIQUE} {A} {REFLEXION} ; {PROFIL} {SISMIQUE} ; {GEOLOGIE} {STRUCTURALE} ; {ETUDE} {REGIONALE} ; {REUNION}},
  booktitle = {},
  journal = {{J}ournal of {G}eophysical {R}esearch},
  volume = {104},
  numero = {{B}2},
  pages = {2855--2874},
  ISSN = {0148-0227},
  year = {1999},
  DOI = {10.1029/98{JB}02842},
  URL = {https://www.documentation.ird.fr/hor/fdi:010021652},
}